The character in the Plantnet key that separates the two species is that hieracioides upper leaves do not have wavy edges and robusta leaves do. Previous photo showing plants in bud at https://canberra.naturemapr.org/Community/Sightings/Details/3871529?CommentSuccess=true#Comments
Hi Betty, I can now help with the ID as I was sent a species list for the site tonight from OEH in Queanbeyan. I didn't know it existed before that. Podolepis hieraicoides is on the list and so is Podolepis Jaceoides.
That certainly helps. Though you have to keep in mind that you, being in the area a lot, will find a lot more species than they found in surveys where they might have only been there for part of a day.